Bull that killed professional rider Mason Lowe will remain on PBR circuit, CEO says. The bull that killed professional rider Mason Lowe during an event in Colorado on Tuesday night will continue to be used on the riding circuit, an official said. >>

Close friend of missing Colo. mom speaks out. A close friend of missing Colorado mom Kelsey Berreth is speaking out for the first time. Berreth disappeared two months ago today and is presumed dead. Her fiance, Patrick Frazee, is charged with her murder. Berreth's friend opens up about the couple's relationship and how she believes it ended. Nikki Battiste reports. >>

Colorado's forests at greater risk due to shutdown, expert says. Winter months are critical for wildfire managers who use the break from hot weather to clear debris that commonly fuels large wildfires >>

Kelsey Berreth's close friend remembers her "spunky" and "sweet" personality. A close friend of missing Colorado mom Kelsey Berreth is speaking out for the first time since she disappeared two months ago. Berreth's friend, Ashley Cogburn, reflects on her personality and their friendship. Nikki Battiste reports. >>

Missing Colorado mom's close friend reveals red flags about her fiance. "The moment that I found out that she had been missing the first words that came out of my mouth were, 'He did something to her'" >>

Moment in nature: Colorado Rockies. "Sunday Morning" checks out a winter's scene in the American West, with footage by videographer Scot Miller >>

Moose seen chasing snowboarders, skiers at Colorado resort. Snowboarders and skiers at a resort in Colorado were chased by a moose on Saturday, and the frightening ordeal was captured on video by one of those being charged. >>

WATCH: Avalanche kills one person in Colorado outside of Aspen, officials say. One person has died in an avalanche, the Pitkin County Sheriff's Office said Monday. The victim was the only person caught in the snow slide, the sheriff's office said. >>

WATCH: Second deadly avalanche in Colorado. A deadly avalanche in Aspen spanned up to 400 feet wide and 200 feet long. >>